© 2010-2014 - University of Minnesota Duluth · of Extinct Hominins • Our Place in Nature • A...

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www.d.umn.edu/cla/faculty/troufs/anthfood/aftexts.html#title

© 2010-2014

www.d.umn.edu/cla/faculty/troufs/anthfood/aftexts.html#title

© 2010-2014

www.d.umn.edu/cla/faculty/troufs/anthfood/aftexts.html#title

© 2010-2014

• Exploring the Diets of Extinct Humans Through Paleontology

• Teeth • Skulls and Jaws • The Postcranial Skeleton

• What Is Adaptation? • Using Chemistry to Infer the Diets

of Extinct Hominins • Our Place in Nature • A Brief Who's Who of the Early Hominins

•What Did Early Hominins Eat? • What Can We Say About the Diets of Fossil Homo? • Summary • Highlight: Lactose Intolerance

Diet and Human Evolution

Diet and Human Evolution

ca. 7 – 1.8 mya

Early Hominins

Time 23 July 2001

ca. 7 – 1.8 mya

early hominins lived in a range of habitats,

including lake and river margins, woodland, bushland, and savanna

“Consequently, it is impossible to conceive of a specific

‘ancestral hominin diet . . .’” The Cultural Feast, 2nd Ed., p. 33

Diet and Human Evolution

early hominins lived in a range of habitats,

including lake and river margins, woodland, bushland, and savanna

“Consequently, it is impossible to conceive of a specific

‘ancestral hominin diet’ . . .” The Cultural Feast, 2nd Ed., p. 33

Diet and Human Evolution

and a quick glance will show prehistoric folks ate

quite a variety of things . . .

http://news.discovery.com/human/humans-hyenas-cave.html

http://www.sciencedaily.com/releases/2010/06/100609122857.htm

http://www.newscientist.com/article/dn17004-ancestors-may-have-used-bone-tools-to-make-smoothies.html?DCMP=OTC-rss&nsref=online-news

so it is clearly . . . impossible to conceive of

a specific ancestral hominin diet

The Cultural Feast, 2nd Ed., p. 33

Diet and Human Evolution

traditionally there have been two basic ideas about early hominin diets:

1. the robust Australopiths were the most herbivorous

2. compared even to the gracile Australopiths, the emergence of Homo was marked by a shift to a greater consumption of protein

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33

traditionally there have been two basic ideas about early hominin diets:

1. the robust Australopiths were the most herbivorous

2. compared even to the gracile Australopiths, the emergence of Homo was marked by a shift to a greater consumption of protein

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33

“robust Australopiths” are also known as (and known in The Cultural Feast as) . . .

“Paranthropus”

traditionally there have been two basic ideas about early hominin diets:

1. the robust Australopiths were the most herbivorous

2. compared even to the gracile Australopiths, the emergence of Homo was marked by a shift to a greater consumption of protein

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33

Swartkrans (South Africa) Homo (“Homo” = human)

the findings do not suggest a specialized plant diet

. . . that is, there is no significant difference from that of the

Paranthropus robustus

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33

but with regard to

Paranthropus robustus

Swartkrans (South Africa) Homo (“Homo” = human)

here too findings do not suggest a specialized plant diet

. . . that is, there is no significant difference from that of the

Paranthropus robustus

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33

and with regard to

Swartkrans (South Africa) Homo (“Homo” = human)

findings do not suggest a specialized plant diet

. . . that is, there is no significant difference from that of

the Paranthropus robustus

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33

with regard to

Australopithecus afarensis (“Lucy” and relatives)

1. the relatively larger surface area of their molar teeth would have favored crushing foods

2. their relatively smaller incisors would have prevented them from eating foods (such as husked fruits) that require incisal preparation

3. their thicker mandibular bodies (corpora) would have withstood high occlusal loads

4. their thick molar enamel would have resisted cracking and abrasion

Diet and Human Evolution

teeth show …

The Cultural Feast, 2nd Ed., p. 33-34

with regard to

Australopithecus afarensis (“Lucy” and relatives)

conclusion:

they would have had difficulty dealing with tough foods

(such as tough fruits, leaves, and meat) but would have been able to deal with

abrasive as well as nonabrasive, hard as well as brittle, and soft foods

(4.2-2.5 mya)

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33-34

with regard to

taken all together the very early hominins likely ate

grasses and sedges directly, or insects, or both

(tools older than 2.5 mya are not yet known)

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 33-34

it would seem also that Paranthropus, Australopithecus,

and Homo all ate tubers and termites

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 34

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 34

Australopithecus garhi apparently made stone tools

(2.4-2.5 mya) and butchered large-mammals

(based on the earliest evidence of stone-tool production

and the oldest indication of hominin modification of animal bones)

K. Milton (1999)

“. . . even though early humans may have had the

gut anatomy and digestive kinetics (motions or activities)

of herbivores, they would have

supplemented their diets with meat-derived proteins”

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 34

Homo habilis

http://www.avph.com.br/homohabilis.htm

K. Milton (1999)

suggests such a dietary shift

with the emergence of early Homo

. . . but the tendency in the direction to supplement the diet with meat-derived proteins may have been common earlier

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 34

Aiello and Wheeler (1995)

argue that increased consumption of animal

products was essential to the evolution of the large hominin brain

. . . but some sources of protein were clearly part of some, if not all, early hominin dietary regimes millions

of years before brain size increased significantly

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 34

Aiello and Wheeler (1995)

argue that increased consumption of animal products was

essential to the evolution of the large hominin brain

. . . but some sources of protein were clearly part of some, if not all, early

hominin dietary regimes millions of years before brain size increased significantly

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 34

thus . . . while “. . . it is impossible to conceive

of a specific ‘ancestral hominin diet’ . . .”

The Cultural Feast, 2nd Ed., p. 33

Diet and Human Evolution

it is clear that . . . some sources of protein were part of

some, if not all, early hominin dietary regimes

for millions of years

Diet and Human Evolution

The Cultural Feast, 2nd Ed., p. 34

www.d.umn.edu/cla/faculty/troufs/anthfood/aftexts.html#title

© 2010-2014

www.d.umn.edu/cla/faculty/troufs/anthfood/aftexts.html#title

© 2010-2014

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